TEST CIRCUIT AND SYSTEM
First Claim
1. A test circuit, comprising:
- a data acquisition circuit configured to provide a first test signal;
a digital I/O device configured to provide a control signal and a second test signal; and
at least one channel circuit said channel circuit comprisinga first path configured to accommodate the first test signal;
a second path configured to accommodate the second test signal;
a test node; and
a switching device;
wherein said digital I/O device is coupled to the switching device such that said digital I/O device provides the control signal to said switching device to control said switching device to selectively couple one of said first path or said second path to said test node.
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Accused Products
Abstract
A test circuit and system for testing one or more electrical properties of an electronic circuit or other device under test (DUT) by applying and monitoring test signals to the DUT is disclosed. The test circuit can utilize a plurality of universal interface channel circuits in a single automated test system to provide a unique and flexible approach for testing electronic circuits or devices that has many advantages. A single data acquisition circuit can coupled to one or more universal interface channel circuits. Each of the universal interface channel circuits can be independently commanded by the data acquisition circuit to provide one of a variety of test signals to a DUT as desired.
19 Citations
20 Claims
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1. A test circuit, comprising:
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a data acquisition circuit configured to provide a first test signal; a digital I/O device configured to provide a control signal and a second test signal; and at least one channel circuit said channel circuit comprising a first path configured to accommodate the first test signal; a second path configured to accommodate the second test signal; a test node; and a switching device; wherein said digital I/O device is coupled to the switching device such that said digital I/O device provides the control signal to said switching device to control said switching device to selectively couple one of said first path or said second path to said test node. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system, comprising:
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a data acquisition circuit configured to provide a first test signal; a channel circuit board coupled to said data acquisition circuit, said channel circuit board comprising a plurality of channel circuits and a plurality of I/O devices, wherein each of said plurality of I/O devices are configured to provide a second test signal to at least one of said plurality of channel circuits; each said channel circuit comprising a first path configured to accommodate the first test signal, a second path configured to accommodate the second test signal, a test node, and a switching device configured to selectively couple one of said first path or said second path to said test node; wherein each of said plurality of I/O devices is configured to control said switching device of at least one of said plurality of channel circuits. - View Dependent Claims (11, 12)
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- 9. (canceled)
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13. A test circuit, comprising:
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a data acquisition circuit configured to provide a plurality of analog output signals through a plurality of first electrical contacts and to provide a plurality of analog input signals through a plurality of second electrical contacts; a digital I/O device configured to provide a digital output signal and a digital input signal; a digital to analog converter circuit configured to provide a static analog signal; a plurality of channel circuits, each said channel circuit comprising a plurality of first paths coupled to said plurality of first electrical contacts, a plurality of second paths coupled to said plurality of second electrical contacts, a third path configured to accommodate the digital input signal, a fourth path configured to accommodate the digital output signal and the static analog signal, a switching device, and a test node; wherein said switching device of each said channel circuit is configured to selectively couple one of said plurality of first paths, plurality of second paths, third path, or fourth path to said test node. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification